Question

Which dd command is used to make a complete physical backup of a hard disk?

Option 1: dd if=/dev/hda of=/dev/case5img1
Option 2: dd if=/dev/sda2 of=/dev/sdb2 bs=4096 conv=notrunc,noerror
Option 3: dd if=/dev/hdc of=/home/sam/ bs=2048 conv=notrunc

Answer 1

Option 1: dd if=/dev/hda of=/dev/case5img1 is the command to make a complete physical backup of a hard disk.

Step-by-step explanation:

The correct option to make a complete physical backup of a hard disk using the dd command is Option 1: dd if=/dev/hda of=/dev/case5img1. This command will copy the entire contents of the hard disk /dev/hda to the destination /dev/case5img1. This creates a bit-by-bit replica of the hard disk.